thinkphp OSS服务器签名直传

format(DateTime::ISO8601);
    $pos = strpos($expiration, '+');
    $expiration = substr($expiration, 0, $pos);
    return $expiration."Z";
}

function oss_qianming(){
    $id= 'XXX';
    $key= 'XXX';
    $host = 'http://XXX.oss-cn-beijing.aliyuncs.com';

    $now = time();
    $expire = 30; //设置该policy超时时间是10s. 即这个policy过了这个有效时间，将不能访问
    $end = $now + $expire;
    $expiration = gmt_iso8601($end);

    $dir = 'upload/'. date("Ymd",time()) .'/';

    //最大文件大小.用户可以自己设置
    $condition = array(0=>'content-length-range', 1=>0, 2=>1048576000);
    $conditions[] = $condition; 

    //表示用户上传的数据,必须是以$dir开始, 不然上传会失败,这一步不是必须项,只是为了安全起见,防止用户通过policy上传到别人的目录
    $start = array(0=>'starts-with', 1=>'$key', 2=>$dir);
    $conditions[] = $start; 


    $arr = array('expiration'=>$expiration,'conditions'=>$conditions);
    //echo json_encode($arr);
    //return;
    $policy = json_encode($arr);
    $base64_policy = base64_encode($policy);
    $string_to_sign = $base64_policy;
    $signature = base64_encode(hash_hmac('sha1', $string_to_sign, $key, true));

    $response = array();
    $response['accessid'] = $id;
    $response['host'] = $host;
    $response['policy'] = $base64_policy;
    $response['signature'] = $signature;
    $response['expire'] = $end;
    //这个参数是设置用户上传指定的前缀
    $response['dir'] = $dir;
    return $response;
}






    
    //控制器
    public function edit($id)
    {
        $taoxi = $this->taoxi_model->find($id);
        $oss_qianming = oss_qianming();

        return $this->fetch('edit', ['taoxi' => $taoxi, 'oss_qianming' => $oss_qianming]);
    }


?>




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